Question

6. The function of ctenidium in Pila is
[A] digestive
[B] respiratory
(C) reproductive
[D] of brain​

Answer 1

option B ) respiratory

The function of ctenidium in Pila is respiratory

Explanation :-

• In molluscs, ctenidia is found as a respiratory organ located in mantle cavity.

• Ctenidia works like :- Blood carries carbon dioxide to the gills or ctenidia and then pick up oxygen from the water then blood then distributes oxygen to all cells of the body.
• (note :- they respire deoxygenated blood )

• Some example of organism in which ctenidia is present cephalopods and Polyplacophorans (chitons)

• Pila is a amphibian but In water, it will use branchial for respiration with the help of gill ( ctenidia )